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What chemical changes can ultrasonic sonochemical devices make?

Views:39     Author:Site Editor     Publish Time: 2019-09-29      Origin:Site

  

  What chemical changes can ultrasonic sonochemical devices make? 



Ultrasonic chemical treatment technology as a physical means and tool can produce a series of near-extreme conditions in the medium of chemical reaction. This energy can not only stimulate or promote many chemical reactions, accelerate the speed of chemical reaction, but also change the direction of some chemical reactions and produce some desirable results. The ineffective and miracle is ultrasonic chemistry. Ultrasonic chemistry can be applied to almost all chemical reactions, such as extraction and separation, synthesis and degradation, biodiesel production, microbial control, degradation of toxic organic pollutants, biodegradation treatment, cell comminution, dispersion and coagulation, etc.                

Ultrasonic acoustical chemical equipment also has a prominent advantage, that is, it has no moving parts, no electromagnetic radiation, installation and fixation is very simple, especially suitable for high pressure, high temperature, toxic, explosive dangerous environment applications. Another application of ultrasonic sonochemical equipment is in the field of sewage treatment and scale prevention and removal. Many experts and scholars have done a lot of research and experiments to prove that ultrasound is effective in scale prevention and removal of pipelines and equipment. 

    Ultrasonic has been widely used in industrial manufacturing industry, such as ultrasonic welding machine, ultrasonic plastic welding machine, ultrasonic cleaning machine and so on. There is no essential difference between the law of reflection, refraction, diffraction and scattering of ultrasonic wave in medium and that of audible sound wave. But the wave length of ultrasonic is very short, only a few centimeters, or even a few thousandths of a millimeter. 


The action of ultrasonic wave in ultrasonic welding machine can promote or accelerate some chemical reactions.

1. Pure distilled water is treated by ultrasonic to produce hydrogen peroxide.

2. Nitrite is produced from water dissolved in nitrogen by ultrasonic treatment.

3. The aqueous solution of dyes will discolor or fade after ultrasonic treatment.


    The occurrence of these phenomena is always accompanied by cavitation. Ultrasonic can also accelerate the hydrolysis, decomposition and polymerization of many chemicals. Ultrasonic also has obvious influence on photochemistry and electrochemistry. After ultrasonic treatment, the characteristic absorption bands of amino acids and other organic substances disappear and show uniform general absorption, which indicates that the molecular structure has been changed by cavitation. 


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